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Measurement of mixing and CP violation parameters in two-body charm decays

  • R. Aaij
  • , C. Abellan Beteta
  • , B. Adeva
  • , M. Adinolfi
  • , C. Adrover
  • , A. Affolder
  • , Z. Ajaltouni
  • , J. Albrecht
  • , F. Alessio
  • , M. Alexander
  • , S. Ali
  • , G. Alkhazov
  • , P. Alvarez Cartelle
  • , A. A. Alves
  • , S. Amato
  • , Y. Amhis
  • , J. Anderson
  • , B. R. Appleby
  • , O. Aquines Gutierrez
  • , F. Archilli
  • A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, V. Balagura, W. Baldini, J. R.Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, K. De Bruyn, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson, K. Carvalho Akiba, G. Casse, M. Cattaneo, Ch Cauet, M. Charles, Ph Charpentier, N. Chiapolini, K. Ciba, X. Cid Vidal, G. 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Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

A study of mixing and indirect CP violation in D0 mesons through the determination of the parameters yCP and AΓ is presented. The parameter yCP is the deviation from unity of the ratio of effective lifetimes measured in D0 decays to the CP eigenstate K+K- with respect to decays to the Cabibbo favoured mode K-π+. The result measured using data collected by LHCb in 2010, corresponding to an integrated luminosity of 29 pb-1, is yCP = (5.5 ± 6.3stat ± 4.1syst) × 10 -3. The parameter AΓ is the asymmetry of effective lifetimes measured in decays of D0 and D̄0 mesons to K+K-. The result is AΓ = (-5.9 ± 5.9stat ± 2.1syst) × 10-3. A data-driven technique is used to correct for lifetime-biasing effects. Copyright CERN.

Original languageEnglish
Article number129
JournalJournal of High Energy Physics
Volume2012
Issue number4
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes

Keywords

  • Hadron-hadron scattering

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